A) \[6.4\times {{10}^{11}}\] Joules
B) \[6.4\times {{10}^{8}}\] Joules
C) \[6.4\times {{10}^{9}}\] Joules
D) \[6.4\times {{10}^{10}}\] Joules
Correct Answer: D
Solution :
\[W=0-\left( -\frac{GMm}{R} \right)=\frac{GMm}{R}\] \[=g{{R}^{2}}\times \frac{m}{R}=mgR\] \[=1000\times 10\times 6400\times {{10}^{3}}\] \[=64\times {{10}^{9}}J\] \[=6.4\times {{10}^{10}}\]sYou need to login to perform this action.
You will be redirected in
3 sec